Glad to see you talking about proof of brain. It's for sure a great concept. I like how it's still implimented on the blockchain. I don't think that we may get rid of it. In fact the blockchain is full of proofs. I always write about them. Everything we do here is to prove something. That's why most people like it here. The more I think about proofs the more I find them. Even curating is a proof, even commenting, even thinking and everything. So, in fact hive is not only about proof of stake. We have so many proofs and we will have more.